Wrench



Jps. COPELAND.

WRENCH.

(No Model.)

No. 534,142. Patnted Feb; 12, 1895.

U ITED STATES PATENT OFFICE.

JAMES S. COPELAND, OF HARTFORD, CONNECTICUT.

WRENCH,

SPECIFICATION forming part of Letters Eatent No. 534,142, dated February12, 1895.. Applicationiiletl November 17,1892. serial No. 452,288- (Nomodel.)

To aZZ whom it may concern:

Be it known that 1, JAMES S. COPELAND, of Hartford, in the countyofHartford and State of Connecticut, have invented certain new and usefulImprovements in Wrenches, of which the following is a full, clear, andexact description, whereby any one skilled in the art can make and usethe same.

The object of my invention is to provide a wrench of the class known asmonkeywrenches that shall be composed of but few parts simply and easilymade and that may.

be readily assembled. I To this end my invention consists in the detailsof the several parts making up the wrench as a whole and in thecombination of such parts asmore particularly hereinafter described andpointed out in the claim.

Referringto the drawings: Figure 1 is a top edge view of awrench'embodying my invention. Fig. 2 is a side view of, the same withpartscut away to show construction. Fig. 3 is a detail view in crosssection through the wrench back of the movable jaw. Fig. 4 is a detailview in cross section of the wrench on a plane passing through theseveral parts.

In the accompanying drawings the letter a denotes the shank or handle ofthe main part of the wrench terminating in a head 6 on the back of whichis formed the jaw b. For a certain distance alongthe shank a thread iscut' in the upper and lower edges atleast if the shank be flattened inoutline and this threaded part forms a feed screw 0 integral with a partof the shank. or handle as the most convenient and preferablewayof-arranging it. t

A movable jaw d is arranged to slide on the shank or handle,'a slottedopening at through the lower part of the jaw forming a strap or yokethat quite closely surrounds the shank and on the back of the jaw is aprojection d slotted on the under side and forming guide arms e thatterminate in hooks e that'are turned forward. An open socket f is formedon the under side of the jaw piece 01 of a size adapted to receive acollar 9 that is threaded on the inside and forms a hollow nut that fitsthe thread out upon the shank and forming the feed screw. On the insideof the collar 1 next the edge under which the hooks e pro ject there ispreferably no thread the function of the collar device part being tohold The socket j that is formed in the under side of the movable jawpiece is of a width that is just sufficient toenable the collar to beinserted in the socket, its edge 9 having first engaged the hooks andthe collar being then turned to a position at about right angles to theplane of the jaw. When thesetwo parts, the movable jaw and the nut orcollar, have been thus assembled the end of the shank is inserted in thesocket d and slipped through the opening in the collar until the latterhas reached the threaded portion forming the feed screw 0, when byrevolving the nut the parts are engaged and the parts of the wrench arein proper position for their ordinary use.

The movable jaw is held firmly against any lengthwise movement along theshank in either direction and with equal firmness against any tiltingmovement of the jaw while the jaw is'fi'rmly anchored and held by thenut that lies against the shoulder formed by one edge of the socket finto which this nut and collar projects.

The parts are preferably made of iron or steel but may be made of anysuitable material desired and formed to shape in any desired andconvenient manner.

I claim as my invention In combination in awrench a handle part '7

